Lock joint



FIG. 1 is a perspective view of one piece of the lock joint.

FIG. 2 is a top view thereof.

FIG. 3 is a bottom view thereof.

FIG. 4 is a front view thereof.

FIG. 5 is a back view thereof.

FIG. 6 is a right side view thereof.

FIG. 7 is a perspective view of the opposite piece of the lock joint.

FIG. 8 is a top view thereof.

FIG. 9 is a bottom view thereof.

FIG. 10 is a is a front view thereof.

FIG. 11 is a back view thereof.

FIG. 12 is a left side view thereof.

FIG. 13 is a plan view of both pieces of the lock joint; and,

FIG. 14 is a plan view of both pieces of the lock joint.

The broken line showing of the lock joint is included for the purpose of illustrating portions of the article and forms no part of the claimed design. 

The ornamental design for a lock joint, as shown and described. 